診断用エックス線装置における遮へい計算評価

抄録

Using the numerical values in the provisions of the law, the proportion evaluated in the safe side was examined. At the time, the following were examined, whether there is no superfluous protection or underestimation in comparison with NCRP and the Law. The transmission rate using in the 1/10 value layer were higher than that calculated in the half value layer in both lead and concrete. For the leakage in X-ray examination room, the effective doses were estimated to be less than the limit of the controlled area of 1.3m Sv/3 months. However, the dose using the law are 3.3 times in maximum in comparison with the NCRP. In the case of QI (Quality Index) =0.5, it was found that the dose were overestimated in 3.6 times in maximum.